During a storm, the force of the wind blowing against a skyscraper can be expressed by the vector (132,3454,-76) where the force of the wind is measured in newtons. what is the approximate magnitude of this force 3568
3717
3457
3692

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)